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UNITED STATES PATENT OFFICE.

NORTON D. CHAPMAN, OE TOLEDO, OHIO, AssIGNOR OE ONE-HALE To ALPHEUsCHAPMAN, OE sAME PLAOE.

CARR|AGECOUPLING- SPECIFICATION forming part of Letters Patent No.478,687, dated July 12, 1892.

Application filed April 6, 1891.

To all whom, t may concern:

Be it known that I, NORTON D. CHAPMAN, of Toledo, county of Lucas, andState of Ohio, have invented certain newand use ful Improvements inCarriage-Couplings; and I dohereby declare that the following is a full,clear, and exact description of the invention, Which will enable othersskilled in the art to which it appertains to make and use the same,reference beinghad to the accompanying drawings, and to the figures ofreference marked thereon, which form part of this specification.

My invention relates to a carriage-coupling, and has for its object toprovide a coupling for the head-block, axle, and reach-iron that shallbe positivein assembling the parts, f reefrom noise and rattling, andthat shall present a large wearing-surface where the parts contact.

A further object is to provide a coupling in which bushings of hardmetal may be used.

With these objects in view the invention consists in the parts andcombination of parts hereinafter described, and pointed out in theclaim.

In the drawings, Figure l is a perspective view of a head-block, axle,and reach assembled by means ot` my improved coupling. Fig. 2 is alongitudinal vertical elevation of the same, and Fig. 3 is a like Viewin section showing the bearings bushed with hard metal.

l designates the axle, 2 the head-block, 3 the reach, 4 the brace fromthe coupling to the reach, and 5 the fifth-wheel, these parts being heldassembled by means of my improved coupling, Which consists of a clip 6,having a circular top portion 7, which projects upwardly and enters acircular cavity 8, formed in a cross-bar 9, secured to the under side ofthe head-block and held in place by bolts l0, which secure the uppersection of the fifth-Wheel to the head-block, and also bya boltll,passed through the center ofthe head-block and axle. Plate 9 may, ifdesired, be of less length than that shown and be held to the head-blockby nails or bolts driven or secured in the head-block, as the bolt Ilserves to hold the same in position.

l2 designates the clip-plate, formed with a circular cavity 13, intowhich a circular boss 14, formed on the brace 4, enters, the plate andboss being perforated to receive bolt 1l,

Serial No. 387,794. (No model.)

which passes entirely through the same,the bolt being provided with anut l5, which when screwed firmly against the under side of brace 4holds in the same in place, although it will be understood that whilethe weight upon the head-block holds plate 9 upon the projection 7 withsuficient force to prevent disengagement should the bolt ll becomebroken or displaced.` The brace 4 is also held by its fastening with thereach to cause the boss 14 to be normally in engagement with theclipplate, so that there is always anabsolute guarantee of safety in thecoupling.

In the use of the coupling herein described there is a largebearing-surface at the pivots, and noise or rattling is avoided.

In Fig. 3 I have shown the annular chamber 7 and the boss 14 suppliedwith a bushing 16, of brass or analogous hard metal, this bushing beingdesirable in light couplings to prevent wear at the point of contactwith the bolt ll.

It will be seen that I have provided acoupling of small expense,having alarge bearingsurface at points of Wear, and by the telescopicarrangement avoiding jar or rattling of the parts, with absolute safetyagainst disen gagement ot" the parts.

I wish it understood that I may transpose the parts-that is, form theannular chamber in the clip and the projection upon the plate 9 or formthe clipplate with a bearing and the brace with an annularrecess-Without departing from the spirit of my invention.

- Vhat I claim is- In a carriage-coupling, a head-block plate formedWith an annularrecess, a clip having a recessed circular boss engagingthe said recess, a clip-plate secured to the cli-p and having an annularrecess, a brace having a recessed boss engaging the latter recess, andbushings located in the recesses of the two bosses, in combination witha king-bolt for assembling the several parts of the coupling.

In testimony that I claim the foregoing as my own I aiiix my signaturein presence ot' two witnesses.

NORTON D. CHAPMAN.

Witnesses:

WILLIAM WEBSTER, CARROLL J. WEBSTER.

